JPH0618597U - Lift range setting device for electric shutters, etc. - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a lifting range setting device capable of easily setting the upper and lower limits of a shield in an electric shutter or the like from a distant position. In an elevation range setting device for an electric shutter or the like, a drum D that is rotated by a drive motor M is supported in a storage chamber A, one end of a shield B is fixed to the drum, and the shield is rotated by rotating the drum. In a winding device such as a shutter for winding and rewinding, upper and lower limit counters 1 and 10 that rotate according to the elevation of a shield are attached to at least one of a drum and a motor, and a reset lever 3 is attached to both counters.
13 and limit switches 4 and 14 for shutting off the motor circuits P1 and P2 at the time of reset, and solenoids 5 and 15 for operating the reset lever are respectively attached, and the solenoids can be operated from remote positions to set the upper and lower limits of the shield. It was done like this.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention mainly relates to a lifting range setting device for an electric blind, an electric shutter, or the like.

[0002]

[Prior art]

 Some of the wind-up shutters installed in the opening of buildings and garages, or the wind-up blinds installed on the inside of windows, rotate the drum with an electric motor, and the drums shield the blinds and shutters. While winding and rewinding, a micro switch is installed in the drum storage room to shut off the motor circuit when the shield reaches the upper and lower limits, and the shield automatically stops at the upper and lower limits. Proximity switches and photocells have been used instead of microswitches. (For example, Japanese Utility Model Publication No. 61-141464 and Japanese Utility Model Publication No. 4-13795)

[0003]

[Problems to be solved by the device]

 Electric blinds, shutters, etc. are first attached to the opening of a building or garage by a fitting manufacturer, then electrically wired by an electrician, and then the upper and lower limits of the shield are adjusted and set again by the fitting manufacturer. Joiners have to go to the site twice to complete the installation of electric shutters, etc., and a micro switch that adjusts the upper and lower limits of the shield is installed in a narrow and dark storage room at a high place. Therefore, there is a problem that it is dangerous, the adjustment operation is difficult, and a high degree of skill is required.

In the automatic stop type winding device using the proximity switch and the phototube, the proximity switch malfunctions due to the approach of another object or the phototube crosses in front depending on the mounting positions of the proximity switch and the phototube. There was a problem that it malfunctioned with other things. The present invention has been made in view of the above problems of the prior art, and an object thereof is to elevate and lower the upper and lower limits of a shield in an electric shutter or the like, which can be easily set from a remote position. To provide a range setting device.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, a lifting range setting device for an electric shutter and the like of the present invention is a winding device for lifting a shield whose one end is fixed to the drum, in which a drum which is rotated by a drive motor is supported in a storage chamber. In the above, at least one of the drum and the motor is equipped with upper and lower limit counters that rotate according to the raising and lowering of the shield, and both counters have a reset lever, a limit switch that shuts off the motor circuit at reset, and a reset lever operation. The solenoids are attached respectively, and the solenoids can be operated from remote positions so that the upper and lower limits of the shield can be set.

[0006]

【Example】

 First, the structure of the electric shutter attached to the opening of the garage will be described with reference to FIGS. 6 to 8. The storage chamber A is attached to the upper outside of the opening, and the rails R1 and R2 are attached to the left and right of the outside of the opening. And a drum D, which is rotated by a drive motor M, is supported in the storage chamber A, while a shield B such as a blind or a shutter is vertically slidably inserted between the left rail R1 and the right rail R2, and the shielding is performed. The upper end of the body B is attached to the drum D, and the shield B is wound or unwound by the rotation of the drum D.

The storage chamber A has a rectangular box shape, an entrance C of a shield B is provided inside the lower wall a, a drive motor M of the drum D is connected to motor circuits P1 and P2, and a raising switch 8 is provided. The rotation is stopped by the lowering switch 18 and the stop switch 28. The rails R1 and R2 have a U-shaped cross section, and their openings r1 and r2 are attached so as to be continuous to the left and right ends of the storage chamber entrance C, and the shield B is provided between the opposite openings r1 and r2. And the upper end of the shield B is fixed to the drum D.

Next, the structure of the lifting / lowering range setting device of the present invention will be described with reference to the drawings of the embodiment. The lifting / lowering range setting device has an upper limit for rotatably supporting two or more digits of rotating wheels 21, 22 on the base plate 2. The counter 1 and the lower limit counter 10 that rotatably supports the rotating wheels 21 and 22 on the base plate 12, the reset levers 3 and 13 of the rotating wheels 21 and 22, their operating solenoids 5 and 15, and the reset. At the same time, limit switches 4 and 14 for shutting off the motor circuits P1 and P2 are attached respectively, and the limit switches 4 and 14 are connected to the lift switches 8 and 18, and the solenoids 5 and 15 are connected to the reset switches 9 and 19.

The upper limit counter 1 rotatably supports a plurality of rotating wheels 21, 22 between a left side wall 2a and a right side wall 2b standing on both side edges of a base plate 2, and is arranged in parallel with the rotating wheels 21, 22. The reset lever 3 is supported on one side, the rocking body 7 is supported on the other side, the solenoid 5 is mounted on the operating side of the reset lever 3, and the limit switch 4 is mounted on the rocking range of the rocking body 7, and the rotary wheels 21, 22 are Recesses 6 and 16 are formed on the outer periphery so as to coincide with each other at the reset position to enable counting by two or more digits. The counter shaft 11 is connected to at least one of the motor shaft m and the drum shaft d, or a gear. Is to be engaged.

The reset lever 3 supported in parallel with the rotating wheels 21 and 22 of the upper limit counter 1 is a reset claw capable of contacting the push arm 3b at the tip and the cams 23 and 24 of the rotating wheels 21 and 22 at the bottom. 3a is provided, and the reset claw 3a is normally biased by the spring 25 so as to separate from the cams 23, 24, and when the reset lever 3 is reset against the spring 25, the reset claw 3a is appropriately rotated. Further, the cams 23, 24 of the rotary wheels 21, 22 are brought into contact with each other, the rotary wheels 21, 22 are rotated and reset, and the recesses 6, 16 of the rotary wheels 21, 22 are aligned.

The oscillating body 7 supported in parallel with the rotating wheels 21 and 22 of the upper limit counter 1 is provided with a head portion 7a that abuts on the outer circumference of each rotating wheel 21 and 22 at the tip, and a movable piece 4a of the limit switch 4 is used. It is pressed toward the rotating wheels 21 and 22. The limit switch 4 is connected to the ascending motor circuit P1, and when any one of the rocker body tip portions 7a abuts on the outer circumferences of the rotating wheels 21 and 22, the motor circuit P1 is brought into the connected state and the concave portions of the rotating wheels 21 and 22 are connected. The motor circuit P1 is cut off when the rocking body tips 7a are inserted into the recesses 6 and 16 from the outer peripheries of the rotating wheels 21 and 22 respectively by resetting.

The actuating solenoid 5 of the upper limit reset lever 3 is attached, for example, as shown in FIG. 4 so as to be opposed to the push arm 3b of the reset lever 3 and is electrically connected to the reset switch 9, and the push switch 3b is actuated by the operation of the reset switch 9. Is pulled to swing the reset lever 3 against the spring 25, or the reset lever 3 is attached to the rotation side of the push arm 3b through a link so as to rotate about 45 degrees.

Similar to the upper limit counter 1, the lower limit counter 10 rotatably supports a plurality of rotating wheels 21, 22 on a base plate 12 of the lower limit counter 10 and is reset to one side in parallel with the rotating wheels 21, 22. The oscillating body 17 is supported on the lever 13 and the other side, the solenoid 15 is attached to the operating side of the reset lever 13, and the limit switch 14 is attached to the oscillating range of the oscillating body 17. The limit switch 14 is attached to the descending motor circuit P2. The solenoid 15 is connected to the reset switch 19.

Operate the raising / lowering switches 8 and 18 of the shield B connected to the motor circuits P1 and P2, the reset switches 9 and 19 connected to the solenoids 5 and 15, and the stop switch 28 connected to the motor circuits P1 and P2. It is desirable to collect them in the box 30. The operation box 30 is installed at a position apart from the lifting range setting device, for example, at an opening of a building or a garage. It is also possible to connect the brake 29 to the motor circuits P1 and P2.

Since the lifting range setting device of the present invention has the above-mentioned structure, the storage chamber A and the rails R1 and R2 are attached to the opening of the building or garage in advance and the drum D can be rotated in the storage chamber A as in the conventional case. On the other hand, the shield B is fitted between the rails R1 and R2, and one end of the shield B is fixed to the drum D, and the drum shaft d or the motor shaft m has the upper limit of the lifting / lowering range setting device of the present invention. While installing the counter 1 and the lower limit counter 10, install the operation box 30 connected to both counters 1 and 10 at the opening that is easy to operate from the ground.

First, in order to set the upper limit of the shield B using the raising / lowering range setting device of the present invention, if the raising switch 8 of the operation box 30 is operated and the raising motor circuit P1 is connected, the motor M is used. The drum D rotates in the winding direction of the shield B. If the upper limit reset switch 9 of the operation box 30 is operated when the shield B is wound up and the lower member b reaches the entrance C, the upper limit solenoid 5 is activated by the reset switch 9 and the upper limit reset lever 3 is activated by the solenoid 5. Then, the rotating wheels 21 and 22 of the upper limit counter 1 which have been appropriately rotated are reset, the recesses 6 and 16 of the rotating wheels 21 and 22 are aligned with each other, and the upper limit oscillating body 7 swings in the recesses 6 and 16. The upper limit switch 4 which is inserted dynamically and contacts the oscillating body 7 shuts off the ascending motor circuit P1.

When the lowering switch 18 of the operation box 30 is actuated in the opened state of the opening, the lowering motor circuit P2 is connected and the motor M rotates the drum D in the rewinding direction of the shield B. If the shield B descends along the left and right rails R1 and R2, and the lower member b of the shield B slightly reaches the ground, and the lower limit reset switch 19 of the operation box 30 is operated, the lower limit is reset by the reset switch 19. The solenoid 15 resets the rotating wheels 21 and 22 of the lower limit counter 10 which has been appropriately rotated by operating the lower limit reset lever 13 by the solenoid 15, and aligns the concave portions 6 and 16 of the rotating wheels 21 and 22 with each other. Then, the lower limit oscillating body 17 is oscillatedly inserted into the recesses 6 and 16, and the lower limit limit switch 14 in contact with the oscillating body 17 shuts off the descending motor circuit P2.

The upper limit counter 1 reset by the upper limit of the shield B rotates at the same time as the rewinding of the drum D, and is inserted into the recesses 6 and 16 of the rotary wheels 21 and 22 at the initial stage of the rotation. Also, any one of the upper limit oscillating bodies 7 is pushed out from the recesses 6, 16 to the outer circumferences of the rotary wheels 21, 22, so that the oscillating body 7 oscillates toward the upper limit limit switch 4, and the upper limit limit switch 4 is connected. Then, the lower limit limit switch 14 shuts down the descending motor circuit P2, and the addition and subtraction are performed until the motor M and the drum D are stopped.

That is, the upper and lower limits of the shield B are the operation of the solenoids 5, 15 by the reset switches 9, 19, the swinging of the reset levers 3, 13 by the solenoids 5, 15 and the counter 1 by the reset levers 3, 13. , 10 is reset, the oscillating bodies 7, 17 are oscillated by resetting the counters 1, 10, and the upper and lower limit switches 4, 14 are opened / closed by the oscillating bodies 7, 17.

The upper and lower limits of both limit switches 4 and 14 once determined are changed again by operating the reset switches 9 and 19 at arbitrary rotating positions of the counters 1 and 10 to reset the counters 1 and 10. No adjustment is required. After setting the upper and lower limits of the shield B as described above, the shield B is moved up and down by using the raising / lowering switches 8 and 18 and the stop switch 28 as in the conventional case.

That is, when the raising switch 8 is operated, the drum D is rotated in the winding direction of the shield B by the motor M, the counters 1 and 10 are added and subtracted according to the rotation of the drum D and the motor M, and the shield B is rotated. When the upper limit was reached, the recesses 6 and 16 provided on the rotating wheels 21 and 22 of the upper limit counter 1 were aligned, and the rocking body 7 was rockingly inserted into the recesses 6 and 16 and pressed against the rocking body 7. The upper limit switch 4 shuts off the rising motor circuit P1. That is, the lower member b of the shield B reaches the entrance C, and the ascending motor circuit P1 is shut off in the state where the opening is opened, and the ascending of the shield B is stopped.

On the contrary, when the lower limit switch 18 is operated, the drum D is rotated in the opposite direction to that when the shield B is raised, the counters 1 and 10 are also added and subtracted, and the lower member b of the shield B is placed on the floor G. At the place where the lower limit counter 10 is not strongly collided with, the recesses 6 and 16 provided on the rotating wheels 21 and 22 of the lower limit counter 10 are aligned, and the lower limit swing body 17 is swingably inserted into the recesses 6 and 16, and The lower limit switch 14 pressed against 17 shuts down the descending motor circuit P2. That is, the lower member b of the shield B approaches the floor surface G, and the descent of the shield B stops when the opening is shielded.

By operating the stop switch 28 while the shield B is moving up or down, it is possible to stop the shield B by shutting off the motor circuits P1 and P2 even while moving up and down. The shield B that stops during the ascending / descending operation moves up and down until the lower member b of the shield B reaches the upper and lower limits by operating the ascending switch 8 or the descending switch 18, and when it reaches the upper and lower limits, it automatically stops reliably. .

The lifting range setting device of the present invention is not limited to the above structure, and for example, the upper limit counter 1 and the lower limit counter 10 can be integrally provided, and the reset levers 3, 13 can be provided. It is also possible to support the rockers 7, 17 in opposite directions. Further, the operating means and the mounting position of the reset levers 3 and 13 by the solenoids 5 and 15 can be appropriately changed unless it goes against the gist of the present invention. Even if the lower limit counter 10 is first reset and then the upper limit counter 1 is reset, the same purpose is achieved, and the mounting order of the counters 1 and 10 and the operation box 30 is not limited to the above example.

[0025]

[Effect of device]

 Since the lifting range setting device in the electric shutter or the like of the present invention is configured as described above, it has the following effects. The up / down range of the shield can be determined by the upper and lower limit counters, and the counter can be set by visually observing the up / down state of the shield from a remote position. As a result, when initializing the upper and lower limits of the shield in the contractor, there is no risk of adjusting in a containment room at a high place, and it is not necessary to adjust in a narrow and dark containment room. The upper and lower limits can be initialized.

Moreover, even when changing the upper and lower limits of the initially set shield, it is not necessary to call an engineer to adjust the reset position of the counter, and the user can easily fine-tune or correct the reset position. You can also In particular, the lifting range setting device of the present invention is most effective when used in an electric wind-up blind that is attached to the indoor side of a window or a wind-up type shading sheet that extends outside the body.

[Brief description of drawings]

FIG. 1 is a plan view of a main part of a lifting / lowering range setting device according to the present invention.

FIG. 2 is a plan view of an upper limit counter.

FIG. 3 is a cross-sectional view showing an example of the operation of the limit switch by the rocking bodies (A) and (B).

FIG. 4 is a sectional view showing an operation example of a reset lever by the solenoids (A) and (B).

FIG. 5 is a circuit diagram.

FIG. 6 is a front view of a shutter showing an example of use of the elevation range setting device of the present invention.

7 (A) and 7 (B) are vertical cross-sectional views showing an example of raising and lowering the shield.

FIG. 8 is a cross-sectional view showing an example of guiding the shield.

[Explanation of symbols]

A Storage room B Shield C Doorway D Drum, d Drum shaft M Motor, m Motor shaft R1, R2 Rails 1,10 Counter 2,12 Base plate 3,13 Reset lever 4,14 Limit switch 5,15 Solenoid 6,16 Recesses 7,17 Oscillator 8,18 Elevating switch 9,19 Reset switch 21,22 Rotating wheel, 23,24 Cam 25 Spring, 28 Stop switch, 29 Brake, 30 Operation box G Floor surface P1, P2 Motor circuit Y1, Y2 relay

Claims (1)

[Scope of utility model registration request] 1. A drum (D) which is rotated by a drive motor (M) is supported in a storage chamber (A), one end of a shield (B) is fixed to the drum, and the shield is rotated by rotating the drum. In winding devices such as shutters for winding and rewinding,
An upper limit counter (1) and a lower limit counter that rotate according to the elevation of the shield on at least one of the drum and the motor
Attach the (10) and reset levers (3,13) on both counters.
And the limit switches (4, 14) that shut off the motor circuits (P1, P2) at the time of reset, and the reset lever actuating solenoids (5, 15) respectively, and operate the solenoids from a remote position. An elevation range setting device for electric shutters that determines the upper and lower limits of the shield.